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Kenplas Forum ==> Blow Molding (Machine) ==> Preform Bottom Bursts while Stretching/Blowing
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is it always from the same preform cavity? Same blow mold?

Totally random? type of machine linear or rotary? cavitation? 2 step or single step?

I surprise people can actually post advice without knowing the basic of the issue. It's like shooting a fly in the dark.

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7/20/2008 7:08:52 AM By fred
1. Preblow may too early. Delay preblow and high blow timer.
2. Insufficient resin drying

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5/22/2008 5:24:50 AM By Raju Sapkal
stretching too slow

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3/1/2008 1:42:51 AM By wilson
1. Temperature of preform bottom is too high; or temperature of preform body is too low;
2. Preforms are made of depolyerized PET resin.

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2/15/2006 3:11:18 PM By Kenplas
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